WO2002090094A1 - Regroovable running tread for tyres and methods for obtaining same - Google Patents
Regroovable running tread for tyres and methods for obtaining same Download PDFInfo
- Publication number
- WO2002090094A1 WO2002090094A1 PCT/EP2002/004712 EP0204712W WO02090094A1 WO 2002090094 A1 WO2002090094 A1 WO 2002090094A1 EP 0204712 W EP0204712 W EP 0204712W WO 02090094 A1 WO02090094 A1 WO 02090094A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tread
- regrooving
- grooves
- rubber
- strip
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/66—Moulding treads on to tyre casings, e.g. non-skid treads with spikes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/68—Cutting profiles into the treads of tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/66—Moulding treads on to tyre casings, e.g. non-skid treads with spikes
- B29D2030/662—Treads with antiskid properties, i.e. with spikes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/66—Moulding treads on to tyre casings, e.g. non-skid treads with spikes
- B29D2030/665—Treads containing inserts other than spikes, e.g. fibers or hard granules, providing antiskid properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/03—Slits in threads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10027—Tires, resilient with wear indicating feature
Definitions
- the invention relates to a tire, and more particularly to the tread of such a tire capable of being regrooved, whatever the characteristics of such a tread.
- the tread patterns for tires for heavy goods vehicles are provided with circumferential, straight, zigzag or wavy grooves, said grooves being able to be joined by transverse grooves and / or incisions.
- the circumferential grooves generally include wear indicators, small platforms of vulcanized rubber mixture (or rubber) covering the bottom of these grooves for a certain circumferential length, said indicator indicating the minimum tread depth which must legally remain on the strip. in use.
- the treads for heavy vehicles are regroovable (operation by which it is possible to regroove new grooves), and the tires having such treads carry on their sides the English mention "Regroovable" or the symbol "U”.
- Regrooving allows on the one hand to extend the grip potential of the truck tire and on the other hand to significantly increase the mileage output: from 15 to 30% depending on the case and without penalizing the possibility of retreading, which is also an essential characteristic of a truck tire. It should be added that regrooving also allows fuel economy, the tire having a lower rolling resistance, due to the reduced depth of the grooves in the initial state compared to those of a tire having in new condition a total tread depth corresponding to the maximum regrooving depth.
- regrooving of a groove can be carried out using a rounded heating blade, still often handled by an operator. Said blade, connected to a frame which rests on the tread surface, can be used manually so as to follow fairly closely the course of the groove on the surface of the tread, even in the case of a groove not straight.
- this regrooving operation requires a certain number of precautions. The first of these consists in performing the regrooving operation when there is approximately 2 mm of groove depth, said depth being measured between the tread surface and the radially outer surface of the wear indicators placed at the bottom. groove. This precaution allows a good visualization of the sculpture design and thus to reproduce it without major difficulty. Knowing the remaining tread depth and the
- the regrooving depths generally indicated are theoretical depths. If they are, in a majority of cases, satisfactory and allow the blade height to be adjusted theoretically in order to conserve approximately a certain thickness of rubber between the bottom of the regrooved groove and the radially upper face of the crown reinforcement, the risks of too deep regrooving is not excluded. However, over-regrooving can lead to damage causing premature destruction of the tire casing. It can also compromise the possibility of an economic retreading, that is to say a retreading where only the tread is changed. It can also, in certain extreme cases, reveal, at the bottom of the new grooves after regrooving, the plies of the radially underlying crown reinforcement, which is not generally accepted by the legislation in force.
- US Pat. No. 6,003,576 recommends, in a tire, comprising a radial carcass reinforcement surmounted radially by a crown reinforcement formed by at least one ply of reinforcing elements, and a strip bearing provided with regrooved grooves, providing the tread portions, arranged radially under the regrooving grooves, with depth indicators, each indicator comprising at least one means indicating the minimum depth to be achieved for effective regrooving and the maximum depth must in no case be exceeded.
- the depth indicators are preferably in the form of non-zero width width incisions placed at the bottom of the groove either parallel to the direction of said groove, or perpendicular to said direction, or both simultaneously, the means indicating the minimum and maximum depths then being the geometric shape of the bottom of the depth indicator incision.
- the regrooving indicators do not remove, despite the advanced mechanization and robotization, the risk of passing a blade of cut very close to the layers of the crown reinforcement; these indicators do not remove the human presence for depth settings. Furthermore, regrooving is carried out radially under the original grooves, designed as a function of a new tread thickness, and not as a function of a tread whose
- the thickness has greatly decreased and whose optimal tread pattern is not necessarily the design designed for normal tread thickness.
- the tread of thickness E intended to be used in a tire with a carcass reinforcement surmounted by a crown reinforcement, comprises on its external rolling surface a plurality of grooves of depth h , among which at least circumferential grooves separated axially by ribs; this strip is also provided with at least one internal rubber-on-rubber anti-bonding element, the external wall of which, seen in meridian section, has in part a contour identical to the contour of the wall of the regrooving groove to be created, the point (s) of said wall the furthest (s) from the axis of rotation being radially distant (s) from the tread surface by an amount h] less than the depth h of the grooves, and the point (s) of said wall the closest to the axis of rotation being radially distant from the tread surface by the maximum regrooving height H, this band being characterized by that each anti-binding element delimiting a regrooving groove comprises means ensuring a partial connection to its
- the means ensuring a partial connection of the anti-connection element to the rest of the tread may consist of:
- Plll-13S0_ cll. tread and being advantageously, because simple, representative of a periodic function (wavy, zigzag, crenellated contour or an equivalent shape);
- each orifice • or in a plurality of orifices in the walls of a spacer made of solid material, orifices allowing the formation, during the molding and vulcanization of the tread, of rubber bridges between the regrooving bead and the rest of the band rolling, each orifice having an area at most equal to 25 mm 2 and maximum dimensions between 0.5 mm and 25 mm,
- the portion of rubber inserted inside the regrooving element or cord (for example, the material between the two branches of an anti-bonding element) is retained by the partial connecting means which avoid any violent projection during rolling.
- the partial connecting means which avoid any violent projection during rolling.
- each anti-connection element means signaling that the anti-connection element opens onto the running surface of the partially worn tread (i.e. -to say at a level of wear such that the ends of said element radially closest to the running surface in the initial state come into contact with the roadway during driving).
- This means making the anti-binding element visible can be a material having a color distinct from the color of the strip in order to be clearly visible.
- An anti-gum on gum anti-binding element (a gum being, as known per se, a rubbery mixture comprising one or more elastomers, one or more reinforcing fillers, vulcanization products as well as various adjuvants) can be in the following two forms : • a cut or an incision whose facing walls are distant from a thickness which may be between 0.2 mm and 2 mm, and separated by the atmosphere,
- P10-13S0_pctl An interlayer of thickness e non-sticking or space of width e filled with a solid material having the property of being an anti-sticking between gums and of not sticking itself on gums or of being very easily degradable or capable of being torn with little effort, the quantity e being able to be almost zero.
- internal anti-bonding element is meant an element completely inserted inside the tread considered in new condition (the external walls of this element are entirely contained inside the tread) and do not not opening onto the rolling surface in new condition.
- An anti-bonding element whether in the form of an incision or a space with anti-sticking material, has, seen in section, external walls which can be represented by a closed curve such as a circle, parallelogram, etc. or by an open curve: the anti-bonding element then having at least two branches of thickness e, which are preferably, but not necessarily, substantially parallel to the equatorial plane (here we must understand by section of an anti-bonding element a section perpendicular to its largest dimension).
- the points of the outer wall of an element furthest from the axis of rotation are preferably distant from the tread surface in the initial state by a quantity hi such that the difference (h - h :) is at least equal to the standardized thickness of the wear indicators located in the bottom of the circumferential grooves.
- the contours or shapes of the branches may be such that the bottom or base of said element, which joins the two branches radially inside, is either relatively narrow axially, or relatively broad axially.
- relatively narrow is meant a base whose axial width is at most equal to 6 mm.
- any axial width of the base greater than 6 mm gives said base the qualification of wide, the axial width of a bottom of anti-bonding element with two branches being the axial distance separating the radially inner ends of said two branches.
- the branches can be independent of each other, that is to say not connected to each other.
- the radially inner ends of the branches are axially joined by a base of generally curved shape, such as circular or elliptical, and whose radially outer wall has a shape identical to the bottom of a groove to be created by regrooving.
- the anti-binding elements of a tread are generally circumferential, but they can also form a network so as not only to obtain regrooving of
- IOP-USOjctl circumferential grooves but also regrooving of transverse and / or oblique grooves opening onto said circumferential grooves.
- An object of the invention is also to propose one or more methods for obtaining a tread intended to be regrooved after wear to the legal limit.
- One of the methods for obtaining an unvulcanized tread comprises the following steps: a) - production of a first profiled strip in an unvulcanized rubber mixture provided with grooves corresponding to the regrooving grooves to be created in good time ; b) - production of inserts with solid non-stick material, inserts which, seen in section, at least partially match the shape (s) of regrooving grooves, said inserts being either provided with orifices adapted in number, by dimensions, in localization to obtain the desired distribution of the rubber bridges between the regrooving bead and the rest of the tread, either discontinuous circumferentially, or having radially upper ends of suitable shape, c) - insertion of said inserts in the grooves of the first strip above, d) - laying in said grooves provided with their spacers re
- the tire is finished in a manner well known per se, that is to say with the laying of the unvulcanized tread on the unvulcanized carcass blank, followed by molding and vulcanization of the assembly in a suitable mold.
- Another advantageous method uses, as anti-bonding elements, incisions of small thickness having, seen in meridian section, the shape of the walls of the grooves to be regrooved (the gum situated between said incisions forming a regrooving bead).
- the process according to the invention then consists in using, for obtaining the tread, a vulcanization mold with two dies, as mentioned in patent EP 0858875: a first die of said mold comprises as molding elements between other circumferential metal lamellae capable of creating by molding and vulcanization the anti-bonding elements that are incisions, and a second matrix comprising the molding elements intended to form the
- the metal strips molding the anti-bonding elements may have wavy, zigzag, crenellated or equivalent shapes at their ends. They can also be partially or totally circumferentially discontinuous. Closing the mold with two dies and the vulcanization which follows makes it possible to obtain a vulcanized tread comprising radially inside, among other elements, the anti-sticking elements that are the incisions thus formed, and radially outside the sculpture. new tread.
- the tire is then made up in the following manner, whether it is a new tire or a retreaded tire: after applying a layer of unvulcanized rubber mixture on the carcass blank, a layer whose thickness corresponds to the required thickness above the last crown ply, the pre-vulcanized tread obtained above is laid.
- the regrooving method proper of the tread after maximum wear (the maximum wear being the wear reached when one or more wear indicators are in contact with the floor covering) is then very simplified and such that dispersions manufacturing, in particular in product thicknesses, and manual human intervention in no way affect the radial location of the regrooving antler bottoms.
- This regrooving method consists, after at least partially visible the radially outer walls or ends of at least one anti-bonding element, to cut a small number of vulcanized rubber bridges connecting each regrooving bead to the rest of the strip of rolling then extracting each bead from the strip by breaking by traction or shearing the rest of the vulcanized rubber bridges connecting said bead to form a new groove.
- FIGS. 2 to 5 are perspective views of dividers intended for molding regrooving grooves, according to four variants in accordance with the invention.
- FIGS. 6 to 8 are views of internal incisions in the tread according to three variants according to the invention
- FIG. 9 schematically shows a network of inserts inside the tread
- Figure 10 schematically shows another arrangement of the anti-bonding elements in a tread
- Figure 11 shows an alternative embodiment using a discontinuous anti-bonding element.
- the tire P shown in FIG. 1 is of the “Heavyweight” type and of dimension 315/80 - R 22.5; it comprises a carcass reinforcement 1, comprising, in the example described, a single ply of metal reinforcing elements, said carcass reinforcement being anchored in each bead to a rod by winding, forming axially external reversals (not shown) .
- the carcass reinforcement 1 is radially surmounted by a crown reinforcement 2, composed of at least two working crown plies 21 and 22 of inextensible metal cables, mutually parallel in each ply and crossed from one ply to the following by making angles with the circumferential direction generally between 0 and 45 °, these working plies 21, 22 being surmounted radially by a so-called protective ply 23 formed of so-called "elastic" metallic cables.
- This tread 3 comprises grooves 32 said to be wide compared to the grooves 31 in the edges, called narrow.
- the grooves 31 and 32 are the usual grooves that are found on any tire in new condition and which open onto the contact surface between the tire and the ground.
- the grooves 32 of depth h, measured between the surface of the tread 3 and the bottom of the groove, are provided with protuberances serving as wear indicators 34, protuberances whose radially outer face is distant from the surface of the tread. rolling of a depth hi less than the depth h and which, when they come into contact with the ground during taxiing, signal that it is expedient to perform the regrooving operation.
- the regrooving operation is greatly facilitated by the presence, inside the tread 3, of circumferential gum on gum anti-bonding elements 5, elements which are, in section, in the example described in a U-shape.
- Each of these elements which cannot be vulcanized and are for example of cardboard or thin paper, axially prevents, during the vulcanization of the tread,
- P10.1350_pM any partial or total contact between the portion 6 (or regrooving bead 6) of rubber mixture located between the two branches 51 and 52 of said element 5 and the neighboring rubber mixture parts.
- the radially outer ends 53 of the arms 51 and 52 are distant from the surface 35 of the tread 5 by the quantity h 1 ⁇ while the radially inner end is distant from the surface 35 by the quantity H, less than the thickness E of tread 3 measured at the same axial position as that where H is measured H.
- the thickness of a tread is indeed axially variable as a function of the respective curvatures of the tread surface of the tread and of the crown reinforcement, and the same applies to the quantity H, imposed by the tire manufacturer as a function of the thickness ⁇ of minimum rubber mixture necessary radially above the crown ply 23 radially furthest 'outside.
- the layout (that is to say - say the contour or the geometric shape) of the radially outer ends 53 is preferably representative of a so-called periodic function: the ends can be wavy (figure 2), or provided with notches of rectangular shape (figure 6) or triangular or semi-circular (not shown).
- the partial connection between the rubber of the cord 6 and the remainder of the tread can also be made on the branches 51 and 52.
- the branches 51 and 52 of the interlayer formed from the same material as above, are in their upper part (that is to say close to the rolling surface in the initial state) provided with orifices with closed contour 55 allowing during the molding of the tread the passage of rubber mixture to link the tread and regrooving cord 6, and thus the creation of rubber bridges
- the shape of a U shown in FIGS. 2 and 3 is qualified as an open surface
- the circular shape of FIG. 4 is a shape with a closed surface (circular shape in the occurrence).
- the interlayer 5 internally encloses the regrooving bead 6 in a rubber mixture and is provided with orifices 55 passing through said closed surface for the creation of rubber bridges between said bead and the rest of the tread at the time of molding of the band .
- openings for forming connecting bridges between the tread and the regrooving cords it is possible to use openings with closed outline or openings 55 with open outline or slots (see for example Figure 7), or by a slot 55 having a helical shape on the outer surface of the circumferential regrooving cord 6, said slot 55 being obtained by helically winding a strip of an insert 5 around a rubber cord 6, the pitch of winding being suitable so that the different towers are not joined.
- the orifices are closed or open in outline, the total connection surface between the anti-connection element (insert or incision) and the tread, known as the bridging surface, is between 5% and 35% of the total surface.
- dividers made of paper, cardboard or other material having the properties of being an anti-sticking rubber on rubber and of not sticking itself on a rubber or of tearing, is the preferred solution when the manufacture of the tread with anti-bonding elements is carried out in the unvulcanized state.
- the tread can also be produced in the pre-vulcanized state in a mold having the particularity of having two dies, each matrix comprising metallic molding elements which will give rise to grooves in the tread. It is therefore particularly advantageous to use as anti-bonding elements incisions of small thickness e, less than 1 mm (generally 0.5 mm). As shown in FIGS.
- these U or V-shaped incisions have the particularity of having two branches 51 and 52 joined at their base by a common part 56, a part which is the necessary consequence of the release of the tread, the incision 5 being created in the vulcanization mold of the strip by a
- FIG. 8 shows an incision which can be considered as a variant of the incision of FIG. 7: the quasi-V shape is preserved but the tip of the V is truncated so that there are two branches 51 and 52 independent of each other and whose radially inner ends are spaced from each other by a small amount, of the order of 3 mm.
- Said bonding distance d between the rubber of the regrooving cord 6 and the rubber of the rest of the tread 3 multiplied by the circumferential length of the cord 6 is sufficient to ensure the maintenance of the cord after appearance on the rolling surface of the branches 51 and 52 of the incision 5, the radially outer crenellated ends of the branches 51 and 52 serving here to signal that the wear of the strip is such that the regrooving operation has become necessary.
- FIG. 9 it is also possible to create a network of anti-bonding elements with circumferential parts 5 A and transverse parts 5B, the respective walls 51, 52 and 58, 59 of which are provided with closed orifices or holes 55 for the creation of rubber bridges between the regrooving cords 6A and 6B and the rest of the tread 3.
- the creation of such a network makes it possible, within the framework of regrooving; to provide the tread with a tread pattern more appropriate to the thickness of the tread after wear, a tread pattern making the tread more deformable in the three main directions, and particularly in the longitudinal direction.
- the regrooving of the tread 3 can also be done with a substantially constant tread pattern: it suffices, as shown in FIG. 10, to arrange the spacers or to provide the location of the incisions radially under the original circumferential grooves of the tread of rolling, said spacers or incisions having, seen in meridian section, a suitable shape and more flared at their radially outer parts and the other characteristics of the anti-bonding elements being the same as above.
- FIG. 11 shows an anti-bonding element 5 intended to be incorporated inside a tread in the circumferential direction, this anti-bonding element 5 being composed
- P10-1350_pctl " ... of a plurality of elements completely disjointed 57 from each other and each having a section in an open U-shape.
- These disjointed elements 57 of average length L are arranged one after the other so as to delimit a bead of regrooving corresponding to the rubber 61 located inside said elements and to the rubber 62 between two disjoint elements 57 ..
- the average distance D separating each disjoint element 57 is less than their length L (preferably, the distance D is between 5 % and 35% of the length L). Between two disjointed elements 57 the rubber of the cord is connected to the rest of the tread, which ensures the connection of the cord with the tread.
- Another variant may consist in providing that the branches of an anti-bonding element are not of the same length (that is to say that one branch is closer to the rolling surface than the other branch of the same element).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Tires In General (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Die Bonding (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002587203A JP4454936B2 (en) | 2001-05-03 | 2002-04-29 | Regroovable tread and regrooving method |
EP02750867A EP1392497B1 (en) | 2001-05-03 | 2002-04-29 | Regroovable running tread and methods for obtaining same |
DE60225797T DE60225797T2 (en) | 2001-05-03 | 2002-04-29 | CUT-OFF RUNNING LAYER AND METHOD OF OBTAINING THE SAME |
US10/698,369 US7208110B2 (en) | 2001-05-03 | 2003-11-03 | Regroovable tread and processes for obtaining such |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0105949 | 2001-05-03 | ||
FR01/05949 | 2001-05-03 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/698,369 Continuation US7208110B2 (en) | 2001-05-03 | 2003-11-03 | Regroovable tread and processes for obtaining such |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002090094A1 true WO2002090094A1 (en) | 2002-11-14 |
Family
ID=8862958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/004712 WO2002090094A1 (en) | 2001-05-03 | 2002-04-29 | Regroovable running tread for tyres and methods for obtaining same |
Country Status (6)
Country | Link |
---|---|
US (1) | US7208110B2 (en) |
EP (1) | EP1392497B1 (en) |
JP (1) | JP4454936B2 (en) |
AT (1) | ATE390270T1 (en) |
DE (1) | DE60225797T2 (en) |
WO (1) | WO2002090094A1 (en) |
Cited By (8)
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EP1800843A2 (en) | 2005-12-22 | 2007-06-27 | The Goodyear Tire & Rubber Company | Method of forming a tire |
US7249620B2 (en) * | 2004-07-12 | 2007-07-31 | The Goodyear Tire & Rubber Company | Pneumatic tire |
US7252728B2 (en) * | 2004-07-12 | 2007-08-07 | The Goodyear Tire & Rubber Company | Method for forming a pneumatic tire |
US7363951B2 (en) * | 2002-05-15 | 2008-04-29 | Michelin Recherche Et Technique S.A. | Wear-adaptable running tread |
WO2013087463A1 (en) * | 2011-12-15 | 2013-06-20 | Continental Reifen Deutschland Gmbh | Regroovable tread profile with wear indicator |
WO2013087873A1 (en) | 2011-12-16 | 2013-06-20 | Compagnie Generale Des Etablissements Michelin | Pneumatic tyre comprising a composite regrooving strip |
WO2022123131A1 (en) * | 2020-12-11 | 2022-06-16 | Compagnie Generale Des Etablissements Michelin | Tyre comprising a tread comprising at least one layer of textile reinforcement elements |
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US7468153B2 (en) * | 2004-12-30 | 2008-12-23 | The Goodyear Tire & Rubber Co. | Degradable blading for tire curing molds |
US7581575B2 (en) * | 2005-10-05 | 2009-09-01 | The Goodyear Tire & Rubber Company | Pneumatic tire with tread having degradable tread filler |
JP5036386B2 (en) * | 2007-04-20 | 2012-09-26 | 東洋ゴム工業株式会社 | Pneumatic tire |
US20090095387A1 (en) * | 2007-10-15 | 2009-04-16 | The Goodyear Tire & Rubber Co. | Tire With Tread Having Full Depth Siping |
US8776847B2 (en) * | 2007-12-21 | 2014-07-15 | Michelin Recherche Et Technique S.A. | Mechanisms for ejecting objects from a tire tread |
US9278582B2 (en) | 2010-12-21 | 2016-03-08 | Bridgestone Americas Tire Operations, Llc | Tire tread having developing grooves |
FR2973285B1 (en) * | 2011-04-01 | 2013-03-29 | Michelin Soc Tech | TREAD BAND COMPRISING AT LEAST ONE GROOVING ROD AND METHOD OF OBTAINING |
FR2975046B1 (en) * | 2011-05-11 | 2013-06-14 | Michelin Soc Tech | COMBINING ROLLER INSERTS AND INCISIONS |
FR2975407B1 (en) | 2011-05-18 | 2014-11-28 | Michelin Soc Tech | COMPOSITE CORD FOR PNEUMATIC BANDAGE BEARING ROPE |
FR2975406B1 (en) | 2011-05-18 | 2014-10-17 | Michelin Soc Tech | RUBBER COMPOSITE CORD FOR PNEUMATIC BANDAGE BEARING ROPE |
US9150057B2 (en) * | 2011-07-13 | 2015-10-06 | Compagnie Generale Des Establissements Michelin | Tire having tread with hidden tread blocks |
RU2014122132A (en) * | 2011-10-31 | 2015-12-10 | Мишлен Решерш Э Текник С.А. | REDUCED REMOVABLE PROTECTOR PARTS FOR RESTORED TIRES |
DE102011056451A1 (en) * | 2011-12-15 | 2013-06-20 | Continental Reifen Deutschland Gmbh | Tread pattern of a pneumatic vehicle tire |
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CN113997593B (en) * | 2021-11-01 | 2024-02-02 | 正新橡胶(中国)有限公司 | Forming method of tread opening metal, tread opening metal and tire |
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- 2002-04-29 WO PCT/EP2002/004712 patent/WO2002090094A1/en active IP Right Grant
- 2002-04-29 JP JP2002587203A patent/JP4454936B2/en not_active Expired - Fee Related
- 2002-04-29 DE DE60225797T patent/DE60225797T2/en not_active Expired - Lifetime
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US7363951B2 (en) * | 2002-05-15 | 2008-04-29 | Michelin Recherche Et Technique S.A. | Wear-adaptable running tread |
US7997315B2 (en) | 2002-05-15 | 2011-08-16 | Michelin Recherche Et Technique S.A. | Wear-adaptable running tread |
US7249620B2 (en) * | 2004-07-12 | 2007-07-31 | The Goodyear Tire & Rubber Company | Pneumatic tire |
US7252728B2 (en) * | 2004-07-12 | 2007-08-07 | The Goodyear Tire & Rubber Company | Method for forming a pneumatic tire |
EP1800843A2 (en) | 2005-12-22 | 2007-06-27 | The Goodyear Tire & Rubber Company | Method of forming a tire |
EP1800843A3 (en) * | 2005-12-22 | 2008-02-06 | The Goodyear Tire & Rubber Company | Method of forming a tire |
WO2013087463A1 (en) * | 2011-12-15 | 2013-06-20 | Continental Reifen Deutschland Gmbh | Regroovable tread profile with wear indicator |
WO2013087873A1 (en) | 2011-12-16 | 2013-06-20 | Compagnie Generale Des Etablissements Michelin | Pneumatic tyre comprising a composite regrooving strip |
FR2984229A1 (en) * | 2011-12-16 | 2013-06-21 | Michelin Soc Tech | PNEUMATIC BANDAGE COMPRISING A COMPOSITE CORD OF REPEAT |
WO2022123131A1 (en) * | 2020-12-11 | 2022-06-16 | Compagnie Generale Des Etablissements Michelin | Tyre comprising a tread comprising at least one layer of textile reinforcement elements |
FR3117407A1 (en) * | 2020-12-11 | 2022-06-17 | Compagnie Generale Des Etablissements Michelin | TIRE WHOSE TREAD CONTAINS ORIENTED FIBERS |
FR3117408A1 (en) * | 2020-12-11 | 2022-06-17 | Compagnie Generale Des Etablissements Michelin | TIRE COMPRISING A TREAD COMPRISING AT LEAST ONE LAYER OF TEXTILE REINFORCING ELEMENTS |
WO2022123132A3 (en) * | 2020-12-11 | 2022-08-11 | Compagnie Generale Des Etablissements Michelin | Tire, the tread of which comprises oriented fibers |
Also Published As
Publication number | Publication date |
---|---|
DE60225797D1 (en) | 2008-05-08 |
ATE390270T1 (en) | 2008-04-15 |
EP1392497A1 (en) | 2004-03-03 |
DE60225797T2 (en) | 2009-04-16 |
EP1392497B1 (en) | 2008-03-26 |
JP2004526625A (en) | 2004-09-02 |
US7208110B2 (en) | 2007-04-24 |
JP4454936B2 (en) | 2010-04-21 |
US20040089384A1 (en) | 2004-05-13 |
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